#51AC52
Closest named color: Dark Pastel Green (#56AE57). oklch(66.8% 0.154 143.8), rgb(81, 172, 82).
Aa
Black text reads best on this color (7.37:1).
About this color
#51AC52 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.154 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Pastel Green (#56AE57), ΔE 0.009 away. Black text reads best on it, at 7.37:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Dark Pastel Green (#56AE57) |
| Black text | 7.37:1 |
| White text | 2.84:1 |
Values
| HEX | #51AC52 |
| RGB | rgb(81, 172, 82) |
| HSL | hsl(121, 36%, 50%) |
| OKLCH | oklch(66.8% 0.154 143.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #51AC52 | 2.84:1 | Fails | Lc -59.6 | Large or bold text, headings |
| Black text on #51AC52 | 7.37:1 | AAA | Lc 49.7 | Large or bold text, headings |
| #51AC52 text on white | 2.84:1 | Fails | Lc 54.3 | Large or bold text, headings |
| #51AC52 text on black | 7.37:1 | AAA | Lc -47.5 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#C9E1C8
oklch(88.5% 0.042 144.1)
-
Step 300
300
#A4CEA2
oklch(81% 0.075 143.7)
-
Step 400
400
#70B46F
oklch(70.7% 0.12 143.9)
-
Step 500
500 (this color)
#51AC52
oklch(66.8% 0.154 143.8)
-
Step 600
600
#1D8B26
oklch(55.7% 0.168 143.8)
-
Step 700
700
#0A7617
oklch(49.2% 0.157 143.7)
-
Step 800
800
#106017
oklch(42.8% 0.129 143.9)
-
Step 900
900
#184F1A
oklch(37.8% 0.101 143.8)
-
Step 950
950
#102E10
oklch(27% 0.064 143.6)
#51AC52 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #AF9E4A | 0.114 |
| Deuteranopia (no green cones) | #A39658 | 0.113 |
| Tritanopia (no blue cones) | #43A897 | 0.095 |
| Achromatopsia (no color) | #999999 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51AC52
#51AC52
oklch(66.8% 0.154 143.8)
- #C270CA
#C270CA
oklch(66.8% 0.155 323.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #51AC52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.009
- Mid Green #50A747 ΔE 0.016
- Fern #63A950 ΔE 0.017
- Medium Green #39AD48 ΔE 0.022
- Algae #54AC68 ΔE 0.027
- Jade Green #2BAF6A ΔE 0.030
- Seaweed Green #35AD6B ΔE 0.030
- Grass #5CAC2D ΔE 0.032
Use #51AC52 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.